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v1.0.0
ICD-10 Guide
DiagnosesAbnormal Computed Tomography

Abnormal Computed Tomography

ICD-10 Coding for Abnormal Computed Tomography(R93.89, R93.2)

PRIMARY SPECIALTYRadiology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Abnormal Computed Tomography?
Essential facts and insights about Abnormal Computed Tomography

Key Clinical Considerations:

  • Presence of abnormal findings on diagnostic imaging of body structures, such as organs, tissues, or vessels
  • Unusual or unexpected findings on computed tomography (CT) scan not associated with current known diseases or conditions

Clinical Information

Clinical Criteria & Documentation Requirements

  • Detailed description of the abnormal findings on the computed tomography scan
  • Specific body structure or region examined
  • Clinical relevance or significance of the abnormal findings
  • Any associated symptoms or conditions

Coding Guidelines

Usage Guidelines & Examples

  • R93.89 is used for abnormal findings on diagnostic imaging of other specified body structures
  • R93.2 is used for abnormal findings on diagnostic imaging of liver and biliary tract
  • Selection of the correct code depends on the specific body structure with abnormal findings

Code Exclusions

Important Exclusions

  • Abnormal findings on diagnostic imaging of lung (R91)
  • Abnormal findings on mammogram (R92)

Related ICD-10 Codes

Primary Codes
R93.89
Abnormal findings on diagnostic imaging of other specified body structures
R93.2
Abnormal findings on diagnostic imaging of liver and biliary tract
Ancillary Codes
Z08
K70-K77
R93.2
when liver disease is confirmed.
Differential Codes
R93.2
R93.2
specifically for liver and biliary tract findings.
K76.0
K76.0
when fatty liver is confirmed by imaging and clinical correlation.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Radiology

Specialty Applications

  • Abnormal findings on CT scan of the liver and biliary tract
  • Abnormal findings on CT scan of other specified body structures

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Patient underwent CT scan showing abnormal findings in the [specify body structure].

Template 2

CT scan reveals unexpected findings in the [specify body structure], not associated with any known conditions.

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What does 'abnormal findings' mean?

It refers to unusual or unexpected observations on the CT scan not associated with a known disease or condition.

When should these codes be used?

These codes should be used when the CT scan shows abnormal findings of the liver, biliary tract, or other specified body structures.